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Innovative Engineering Solutions to reduce the stress on Natural Water Resources Brook Hill Chief Environmental Engineer Minerals & Metals WorleyParsons.

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Presentation on theme: "Innovative Engineering Solutions to reduce the stress on Natural Water Resources Brook Hill Chief Environmental Engineer Minerals & Metals WorleyParsons."— Presentation transcript:

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2 Innovative Engineering Solutions to reduce the stress on Natural Water Resources Brook Hill Chief Environmental Engineer Minerals & Metals WorleyParsons Services Pty Ltd

3 Why we have to act (Green)  Population: 6 billion rising to 10 billion by 2050  Forest: over 50% of all forest cover lost  Between 1 – 1.5 billion people without access to clean water  Ocean Health: claims that 75% fish stocks destroyed worldwide  Biodiversity: largest species extinction in 75 million yrs  Climate Change: $10 trillion in economic damage

4 We can’t just continue burning more coal

5 and we can’t continue wasting water !  Fresh water use by industry, Gladstone, Central Queensland

6 and an old solution isn’t going to help 12/10/20146 Burn Coal Drought Desalination CLIMATE CHANGE OUR RESPONSE

7 We need to develop new approaches  Which put costs against previous ‘externalities’;  Which incorporate these costs into business models;  To enable us to secure management support and ‘buy-in’;  And which drive behavioural, process design and operational changes.

8 What can we change?

9 12/10/20149 What can we change ? 12/10/20149

10 First Step to Resilience is Future Proofing Move the accounting perspective (decision window) out to the future. 12/10/ Expanded Decision Window Normal Decision Window Future proofing of projects Now20 Years $8/T $20/T$85/T? Cost of CO 2 emissions $0.1/m 3 $ 1.0/m 3 $5/m 3 ? Cost of Water $0.05/kWhr $ 0.50/kWhr$1/kWhr? Cost of Energy Cost of Waste Disposal Cost of Compliance

11 Second step – measure and analyse Gladstone Region Water Demand by End Use

12 Next steps – review all usage  Do more with less – evaluate increased solids density in slurries / pastes / filter cake deposition  ‘Future proofing’ means putting ‘future’ cost rather than ‘historical’ costs into water pricing models  Best Appropriate Practice – value engineering examines the contribution of water in the process – and examines quality of water required. This often encourages use of lowest quality water / seawater for low value uses such as cooling ;  Total Quality Management - excess material useage (incl water use) is a variance from TQM - zero defects and zero waste are now key business drivers;

13 And start to widen the perspective 12/10/ Sustainability Impact Reduction Efficiency Conventional project engineering: NPV focus with Strategic Economic Analysis

14 To enable a Whole Project Cost Benefit Analysis 12/10/201414

15 Whether you take a social view (Green) 12/10/  World is changing −Inexorably rising population −Huge stress on natural world −Massive resource demands −Species extinctions −Changing climate −Significant global risks for humanity  To meet challenge: −Build in business resilience −Facility modification −Increase efficiency −Reduce energy consumption −Clean up, reduce emissions −Engage stakeholders

16 Or a financial view (Black) 12/10/  World is changing −Increasing energy costs −Increasing resource costs (water, etc) −Tightening legislation −Public opinion and community attitudes changing −Increased costs of environmental and social compliance −Volatility  To meet challenge: −Build in business resilience −Facility modification −Increase efficiency −Reduce energy consumption −Clean up, reduce emissions −Engage stakeholders

17 Client’s Perspective – API Sustainability Reporting 12/10/ Social Progress Environmental Stewardship Socio- Environ S Socio Economic Eco- efficiency New Solution Economic Growth

18 New Paradigm 12/10/ Customer’s Processing Plant Inputs Side Effects Products Typical Inputs Raw Products Energy Water Chemicals Plant Types Power Stations Refineries Hydrocarbon production Waste Treatment Secondary Effects Flue Gas clean up – potential CO 2 recovery Heat recycling and recovery Solid and Liquid Waste reuse and improved disposal Spent Chemicals recycling and recovery Outputs Electricity Refined products Crude Oil / Gas Increased focus on efficiency, lower energy and water use with reduced environmental impact

19 EcoNomic Evolution Long pastYesterday EcoNomics

20 Branding 12/10/ Nomics - …from the Greek ‘nomikos’ meaning law Wikipedia … Laws of logic and nature Shorter Oxford English Dictionary ‘Nomic is a game in which changing the rules is a move. - Peter Suber, the creator of Nomic, The Paradox of Self Amendment, App 3 P362 Economics … The science that deals with production, distribution and consumption of goods and services or the material welfare of human kind. The maximization of human welfare. Eco - … from the Greek ‘oikos’ meaning house. Used as a prefix (as in ecology, ecosystems) concerned with living thing in relation to their environment.

21 EcoNomics is a whole new way to deliver projects  Select and design for sustainability from the outset  Look outside the facility limits  Look over the longer term  Explicitly monetise all environmental and social risks, impacts and opportunities  Mandate the entire project team to achieve sustainability objectives  Train wide range of staff to contribute to sustainability within a project  Embed best available technical capabilities within project teams  Proprietary tools and systems to support the project 12/10/201421

22 Working examples  Filter cake residuals

23 Working examples  Thickened tailings and central deposition

24 Working examples  Dry stack tailings

25 Working examples  Dry tailings disposal LaCoipa Atacama


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